CN106554067B - Ter-polymers are used for the degreaser of heavy crude heat extraction sewage processing - Google Patents
Ter-polymers are used for the degreaser of heavy crude heat extraction sewage processing Download PDFInfo
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- CN106554067B CN106554067B CN201611025438.0A CN201611025438A CN106554067B CN 106554067 B CN106554067 B CN 106554067B CN 201611025438 A CN201611025438 A CN 201611025438A CN 106554067 B CN106554067 B CN 106554067B
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- 239000013527 degreasing agent Substances 0.000 title claims abstract description 60
- 239000010865 sewage Substances 0.000 title claims abstract description 46
- 229920000642 polymer Polymers 0.000 title claims abstract description 35
- 238000000605 extraction Methods 0.000 title claims abstract description 19
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims abstract description 15
- GLZLBMBOISVRDG-UHFFFAOYSA-N n-benzyl-n-ethylprop-2-enamide Chemical compound C=CC(=O)N(CC)CC1=CC=CC=C1 GLZLBMBOISVRDG-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 6
- 150000003254 radicals Chemical class 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 229910002567 K2S2O8 Inorganic materials 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical group OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- CTXUTPWZJZHRJC-UHFFFAOYSA-N 1-ethenylpyrrole Chemical compound C=CN1C=CC=C1 CTXUTPWZJZHRJC-UHFFFAOYSA-N 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 125000001165 hydrophobic group Chemical group 0.000 claims 1
- 239000000178 monomer Substances 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 49
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000010779 crude oil Substances 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 4
- -1 Sodium alkyl sulfate Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000004040 pyrrolidinones Chemical class 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- SWPMNMYLORDLJE-UHFFFAOYSA-N n-ethylprop-2-enamide Chemical compound CCNC(=O)C=C SWPMNMYLORDLJE-UHFFFAOYSA-N 0.000 description 2
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical group O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- OZFIGURLAJSLIR-UHFFFAOYSA-N 1-ethenyl-2h-pyridine Chemical compound C=CN1CC=CC=C1 OZFIGURLAJSLIR-UHFFFAOYSA-N 0.000 description 1
- LPNSCOVIJFIXTJ-UHFFFAOYSA-N 2-methylidenebutanamide Chemical compound CCC(=C)C(N)=O LPNSCOVIJFIXTJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical group 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to disposing polluted water in oil technical fields, the degreaser of heavy crude heat extraction sewage processing is used for more particularly to a kind of ter-polymers, the degreaser is to be made by acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone by micellar free radical copolymerization method, its molecular weight is 10000~90000, preferably 30000~50000, the molar ratio of the acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone is 1: 0.1~1.5: 0.5~3, preferably 1: 1.1: 1.5.Degreaser of the invention is simple with preparation, heat-resistant salt-resistant performance is strong, at low cost, and oil removal rate height can reach 96% or more；And the oil recovery that separation generates does not influence subsequent crude oil dehydration.Therefore, present invention is generally applicable in the oil removing process of oil-field thick-oil thermal recovery sewage.
Description
Technical field
The present invention relates to a kind of degreasers for disposing polluted water in oil, and in particular to a kind of ter-polymers are used for viscous crude
The degreaser of thermal recovery sewage treatment.
Background technique
The viscosity of viscous crude is big, and the sewage treatment for exploiting generation is always to restrict one of the important link of its development.Crude oil warp
After the heat chemistry settling processing a period of time for crossing dehydration, silt and other mechanical admixtures enter sewerage together, make dirt
Total suspended matter in water reaches 20000mg/L or so.Larger difficulty is caused to sewage treatment.Meanwhile in order to enable super-viscous oil
Ground is given rise to, the substances such as some surfactants, such as sulfonate are added in oil recovery process, so that Produced Liquid needs
Breaking emulsion and dewatering causes a large amount of chemical agent to remain in sewage, and causing sewage, not only oil content is high, but also the stabilization of emulsion
Property is strong, so that sewage oil removing and purified treatment are increasingly complex.
Conventional treatment process (natural subsidence-coagulant precipitation-filtering) is difficult to obtain heavy crude heat extraction sewage effectively at present
Processing.Another method for removing oil-bearing wastewater Crude Oil is chemical method, that is, uses oil removing agent method.Degreaser substantially divides
For following two categories, element of the first species's multiplicity, deoiling effect is good, but there is preparation process complexity, anti-salt property are poor, higher cost
Disadvantage；Another kind of degreaser ingredient is single, and preparation method and technique are relatively simple, and the requirement to water quality is lower, but exists and remove
The disadvantage of oily effect difference.It is less for the patent of condensed oil sewage processing aspect at present.
Patent ZL201410254042.8 " a kind of composite flocculation deoiling agent for oily waste water treatment " uses sulfuric acid
Aluminium, magnesium chloride, magnesium hydroxide, bentonite and polyacrylamide are combined, which has dosage few, and oil removal efficiency is high,
The features such as preparation is simple, at low cost, but degreaser needs are used with corrosive magnesium hydroxide, the compound is to equipment
With stronger corrosiveness.
Summary of the invention
The present invention for currently available technology deficiency and a kind of ter-polymers are provided and are handled for heavy crude heat extraction sewage
Degreaser, the present invention has simple process, heat-resistant salt-resistant performance strong, low in cost, and the feature that deoiling effect is good.
The invention discloses the degreasers that a kind of ter-polymers are used for heavy crude heat extraction sewage processing, which is by third
Acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone are made by micellar free radical copolymerization method, molecule
Amount is 10000~90000, and molecular formula is as follows:
Wherein: n=40~340, preferably 60~90；
M=2~250, preferably 30~45；
P=20~300, preferably 120~180.
The molar ratio of the acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone is 1:0.1
~1.5:0.5~3, preferably 1:1.1:1.5.
Preferably, the degreaser molecular weight is 30000~50000.
It is a further object to provide a kind of ter-polymers to be used for the degreaser of heavy crude heat extraction sewage processing
Preparation method, the preparation method include the following steps:
(1) the N- benzyl-N- second of deionized water and aforementioned proportion is added in the three-necked flask equipped with thermometer, stirring rod
Base acrylamide is warming up to 30~35 DEG C, 30~60min of constant temperature under 300~500rpm stirring rate；
(2) acrylamide of aforementioned proportion is added in above-mentioned three-necked flask, and temperature is risen to 40~50 DEG C, be added
Hydrophobic grouping solubilizer stirs 20~30min, and stirring rate is 500~600rpm, and after stirring, temperature rises to 65~70
DEG C, 30~50min of constant temperature obtains mixture；
(3) pH value that mixture is adjusted with the sodium hydroxide solution of 6mol/L, makes pH value between 7~8, by aforementioned proportion
N-vinyl pyrrolidone be added to adjustment pH value after mixture in, adjustings stirring rate be 200~300rpm, constant temperature 50
~60 DEG C, after stirring 30~60min, initiator is added, temperature rises to 70~80 DEG C, and stirring rate is 500~800rpm, constant temperature
3~5h is reacted, stirring is stopped, Temperature fall obtains polymer solution；
(4) polymer solution is transferred in round-bottomed flask, is evaporated under reduced pressure, gum-like product is obtained, with acetone washing 3~5
It is secondary, it is then placed in drying box dry 12~36h, finally obtains acrylamide/N- Benzyl-N-ethyl acrylamide/N- ethylene
Base pyrrolidones ter-polymers.
The dosage of the deionized water is 10~20 times of acrylamide monomer quality；The hydrophobic grouping solubilizer
For lauryl sodium sulfate or dodecyl sodium sulfate, dosage is the 2~5% of acrylamide monomer quality；The initiator
For K2S2O8Or NaHSO3, dosage is the 5~10% of acrylamide monomer quality.
The reaction equation is as follows:
Ter-polymers are used for the degreaser of heavy crude heat extraction sewage processing, as follows using technical process:
According to oil-containing situation in oil-field thick-oil thermal recovery sewage, degreaser of the invention is added into sewage, realize demulsification and
Water-oil separating is further processed after recycling petroleum substance for subsequent technique.The specific additional amount of degreaser is as follows:
(1) when oil-containing α >=500mg/L, degreaser, which is added, makes 30~80mg/L of mass concentration of degreaser in sewage；
When (2) 500 ﹥ oil-containing α >=200mg/L, degreaser, which is added, makes 10~20mg/ of mass concentration of degreaser in sewage
L；
When (3) 200 ﹥ oil-containing α >=50mg/L, degreaser, which is added, makes 5~10mg/L of mass concentration of degreaser in sewage；
(4) when oil-containing α < 50mg/L, degreaser, which is added, makes 0.1~5mg/L of mass concentration of degreaser in sewage.
The present invention provides the degreaser that ter-polymers are used for oil-field thick-oil thermal recovery sewage treatment, belongs to amphipathic polymer
Molecule contains heterocyclic group, amide groups, phenyl ring and tertiary amine group on the polymer molecule, dredging in amphipathic polymer molecule
Water chain is the formal distribution with block, can be adsorbed with the oil in sewage, and the polar group on side chain is then easy to be deep into
In greasy dirt, it is easy to that complexing occurs with the gum asphalt in viscous crude, promotes the flocculation of greasy dirt, and then reach to condensed oil sewage
The purpose of oil removal treatment.In addition, the present invention introduces pyrrolidone group when designing oil removing agent molecule, which has rigid
Property structure, it is difficult to torsion and fracture, have preferable heat-resisting property；The group introduced in this molecule simultaneously belongs to nonionic
Type has stronger salt-tolerant trait.
The present invention is had the following advantages and beneficial effects: compared with prior art
(1) raw material sources of degreaser of the invention are extensive, and synthesis technology is simple, and product is easily obtained and transports preservation；
(2) degreaser of the invention is adaptable, and dosage is few, can meet the needs of environmental protection and oil field development；
(3) degreaser of the invention have temperature resistance salt resistant character, can heatproof up to 250 DEG C, resistance to salinity reaches 230000mg/
L；
(4) degreaser of the invention has the characteristics that oil removal efficiency is high to condensed oil sewage processing, and condensed oil sewage processing removes
For oil cut rate up to 96% or more, more existing medicament improves 45% or more, meets the pretreated requirement of oil removing of condensed oil sewage.
Specific embodiment
The present invention is described in further detail below with reference to specific embodiment, and referring to data.It should be understood that these embodiments
It is of the invention solely for the purpose of illustration, rather than limit the scope of the invention in any way.
Embodiment 1: degreaser C1And preparation method thereof
(1) degreaser C1Composition, component and molecular weight it is as follows:
Degreaser C1By acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone according to 1:1.1:
1.5 molar ratios are made by micellar free radical copolymerization method, average molecular weight 42000.
(2) degreaser C1The preparation method is as follows:
1. the N- benzyl-N- of 1052g deionized water and 1.1mol is added in the three-necked flask equipped with thermometer, stirring rod
Ethyl acrylamide is warming up to 32 DEG C, constant temperature 60min under 300rpm stirring rate；
2. the acrylamide of 1mol is added in above-mentioned three-necked flask, and temperature is risen to 50 DEG C, 2.55g 12 is added
Sodium alkyl sulfate stirs 30min, stirring rate 550rpm, and after stirring, temperature rises to 68 DEG C, and constant temperature 50min is mixed
Close object；
3. adjusting the pH value of mixture with the sodium hydroxide solution of 6mol/L, make pH value 7, by the N- vinyl of 1.5mol
Pyrrolidones be added to adjustment pH value after mixture in, adjustings stirring rate be 300rpm, 50 DEG C of constant temperature, stirring 60min after,
7.11g K is added2S2O8, temperature rises to 75 DEG C, stirring rate 800rpm, isothermal reaction 5h, stops stirring, and Temperature fall obtains
To polymer solution；
4. polymer solution is transferred in round-bottomed flask, it is evaporated under reduced pressure, obtains gum-like product, with acetone washing 3 times, so
After be put into drying box dry 36h, finally obtain acrylamide/N- Benzyl-N-ethyl acrylamide/n-vinyl pyrrolidone
Ter-polymers C1。
Example 2: degreaser C2And preparation method thereof
(1) degreaser C2Composition, component and molecular weight it is as follows:
Degreaser C2By acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone according to 1:0.1:
0.5 molar ratio is made by micellar free radical copolymerization method, average molecular weight 12000.
(2) degreaser C2The preparation method is as follows:
1. the N- benzyl-of 710.8g deionized water and 0.1mol is added in the three-necked flask equipped with thermometer, stirring rod
N- ethyl acrylamide is warming up to 30 DEG C, constant temperature 45min under 400rpm stirring rate；
2. the acrylamide of 1mol is added in above-mentioned three-necked flask, and temperature is risen to 45 DEG C, 1.42g 12 is added
Sodium alkyl sulfonate stirs 25min, stirring rate 600rpm, and after stirring, temperature rises to 70 DEG C, and constant temperature 30min is mixed
Close object；
3. adjusting the pH value of mixture with the sodium hydroxide solution of 6mol/L, make pH value 7, by the N- vinyl of 0.5mol
Pyrrolidones be added to adjustment pH value after mixture in, adjustings stirring rate be 260rpm, 60 DEG C of constant temperature, stirring 30min after,
5.68g NaHSO is added3, temperature rises to 80 DEG C, stirring rate 500rpm, isothermal reaction 4h, stops stirring, and Temperature fall obtains
To polymer solution；
4. polymer solution is transferred in round-bottomed flask, it is evaporated under reduced pressure, obtains gum-like product, with acetone washing 5 times, so
After be put into drying box it is dry for 24 hours, finally obtain acrylamide/N- Benzyl-N-ethyl acrylamide/n-vinyl pyrrolidone
Ter-polymers C2。
Embodiment 3: degreaser C3And preparation method thereof
(1) degreaser C3Composition, component and molecular weight it is as follows:
Degreaser C3By acrylamide, N- Benzyl-N-ethyl acrylamide and n-vinyl pyrrolidone according to 1:1.5:3
Molar ratio is made by micellar free radical copolymerization method, average molecular weight 86000.
(2) degreaser C3The preparation method is as follows:
1. the N- benzyl-of 1421.6g deionized water and 1.5mol is added in the three-necked flask equipped with thermometer, stirring rod
N- ethyl acrylamide is warming up to 35 DEG C, constant temperature 30min under 500rpm stirring rate；
2. the acrylamide of 1mol is added in above-mentioned three-necked flask, and temperature is risen to 40 DEG C, 3.55g 12 is added
Sodium alkyl sulfate stirs 20min, stirring rate 500rpm, and after stirring, temperature rises to 65 DEG C, and constant temperature 40min is mixed
Close object；
3. adjusting the pH value of mixture with the sodium hydroxide solution of 6mol/L, make pH value 8, by the N- vinylpyridine of 3mol
Pyrrolidone is added in the mixture after adjusting pH value, and adjusting stirring rate is 200rpm, 55 DEG C of constant temperature, after stirring 45min, is added
Enter 3.55g K2S2O8, temperature rises to 70 DEG C, stirring rate 700rpm, isothermal reaction 3h, stops stirring, and Temperature fall obtains
Polymer solution；
4. polymer solution is transferred in round-bottomed flask, it is evaporated under reduced pressure, obtains gum-like product, with acetone washing 4 times, so
After be put into drying box dry 12h, finally obtain acrylamide/N- Benzyl-N-ethyl acrylamide/n-vinyl pyrrolidone
Ter-polymers C3。
4 degreaser C of embodiment1Field application
Multi-purpose station T2Water be heavy crude heat extraction sewage, test process scale be 120m3/ d, water oil content 678mg/L,
Sewage salinity 25680mg/L utilizes degreaser C of the invention1To multi-purpose station T2Sewage carry out oil removal treatment, add oil removing
The concentration of degreaser is 45mg/L in sewage after agent, and oil content is reduced to 11.5mg/L after processing, and oil content reduces by 98.3%, removes
Oil works well, and reaches technique requirement.
5 degreaser C of embodiment2Field application
Multi-purpose station T5Water be heavy crude heat extraction sewage, test process scale be 70m3/ d, water oil content 532mg/L, it is dirty
Water salinity 32563mg/L utilizes degreaser C of the invention2To multi-purpose station T5Sewage carry out oil removal treatment, add degreaser
The concentration of degreaser is 35mg/L in sewage afterwards, and oil content is reduced to 11.7mg/L after processing, and oil content reduces by 97.8%, oil removing
It works well, and reaches technique requirement.
6 degreaser C of embodiment3Field application
Multi-purpose station T8Water be heavy crude heat extraction sewage, test process scale be 80m3/ d, water oil content 468mg/L, it is dirty
Water salinity 42568mg/L utilizes degreaser C of the invention3To multi-purpose station T8Sewage carry out oil removal treatment, add degreaser
The concentration of degreaser is 18mg/L in sewage afterwards, and oil content is reduced to 12.6mg/L after processing, and oil content reduces by 97.3%, oil removing
It works well, and reaches technique requirement.
Claims (8)
1. ter-polymers are used for the degreaser of heavy crude heat extraction sewage processing, which is by acrylamide, N- benzyl-N- second
Base acrylamide and n-vinyl pyrrolidone are made by micellar free radical copolymerization method, and molecular weight is 10000~
90000, molecular formula is as follows:
Wherein: n=40~340；
M=2~250；
P=20~300.
2. the degreaser that ter-polymers according to claim 1 are used for heavy crude heat extraction sewage processing, which is characterized in that institute
The molar ratio of acrylamide, N- Benzyl-N-ethyl acrylamide and the n-vinyl pyrrolidone stated is 1:0.1~1.5:0.5
~3.
3. the degreaser that ter-polymers according to claim 2 are used for heavy crude heat extraction sewage processing, which is characterized in that institute
The molar ratio of acrylamide, N- Benzyl-N-ethyl acrylamide and the n-vinyl pyrrolidone stated is 1:1.1:1.5.
4. ter-polymers according to claim 1 or 2 are used for the degreaser of heavy crude heat extraction sewage processing, feature exists
In the degreaser molecular weight is 30000~50000.
5. preparation method of the ter-polymers according to claim 1 for the degreaser of heavy crude heat extraction sewage processing,
Be characterized in that, the preparation method specifically includes the following steps:
(1) the N- Benzyl-N-ethyl third of deionized water and aforementioned proportion is added in the three-necked flask equipped with thermometer, stirring rod
Acrylamide is warming up to 30~35 DEG C, 30~60min of constant temperature under 300~500rpm stirring rate；
(2) acrylamide of aforementioned proportion is added in above-mentioned three-necked flask, and temperature is risen to 40~50 DEG C, be added hydrophobic
Group solubilizer stirs 20~30min, and stirring rate is 500~600rpm, and after stirring, temperature rises to 65~70 DEG C, perseverance
30~50min of temperature obtains mixture；
(3) pH value that mixture is adjusted with the sodium hydroxide solution of 6mol/L, makes pH value between 7~8, by the N- of aforementioned proportion
Vinyl pyrrolidone is added in the mixture after adjusting pH value, and adjusting stirring rate is 200~300rpm, constant temperature 50~60
DEG C, after stirring 30~60min, initiator is added, temperature rises to 70~80 DEG C, and stirring rate is 500~800rpm, isothermal reaction
3~5h, stops stirring, and Temperature fall obtains polymer solution；
(4) polymer solution is transferred in round-bottomed flask, is evaporated under reduced pressure, obtains gum-like product, with acetone washing 3~5 times, so
After be put into drying box dry 12~36h, finally obtain acrylamide/N- Benzyl-N-ethyl acrylamide/N- vinyl pyrrole
Alkanone ter-polymers.
6. preparation method of the ter-polymers according to claim 5 for the degreaser of heavy crude heat extraction sewage processing,
It is characterized in that, the dosage of the deionized water is 10~20 times of acrylamide monomer quality.
7. preparation method of the ter-polymers according to claim 5 or 6 for the degreaser of heavy crude heat extraction sewage processing,
It is characterized in that, the hydrophobic grouping solubilizer is lauryl sodium sulfate or dodecyl sodium sulfate, dosage is propylene
The 2~5% of amide monomer quality.
8. preparation method of the ter-polymers according to claim 5 or 6 for the degreaser of heavy crude heat extraction sewage processing,
It is characterized in that, the initiator is K2S2O8Or NaHSO3, dosage is the 5~10% of acrylamide monomer quality.
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